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Some technical problem needs to be solved in hydraulic hoist development

PENG You-duo 1, YE Xiao-yang 1, ZHANG Yong-zhong 2 , LIU De-shun 1 (1 Vibration, Impact and Diagnose Research Institue, Xiangtang Polytechnic University,Xiangtang 411201, China; 2 Mechanic and Electric Institute,China University of Mining and Te  
After a performance coordination analysis on floor level accuracy, riding comfortability, hydraulic driven and braking of the hydraulic hoist, the paper pointed out that the hand operation, the feed back discharge adjustment structure of the variable pump, open circuit speed control method of pump controlled motor and others are the main causes of the shaft hoisting. To have a computer auto control for the hydraulic hoist is the key to solve these problems.
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